The Boeing hit doesn't qualify as a conspiracy theory--yet.
I define a conspiracy theory as: A belief that a conviction should occur, in the absence of a credible indictment.
Since the coroner hasn't even issued a report yet AFAIK, this can't be a conspiracy yet. Note also that in order to be a conspiracy theory by my definition, mere suspicion is not sufficient. You must *believe* whole heartedly that the crime occurred. Thus, you can be suspicious of Epstein's death and not be a conspiracy theorist. It's only when you assert with authority that you *know* he was assassinated that you become a conspiracy theorist because to reiterate, you can't prove that assertion. You have no credible indictment. The professionals who do that for a living couldn't come up with one, and neither can you.
That brings us to Covid. There are a lot of ideas floating around about it, and not all of them are equal. BiLL gATEs pUt 5G iN yOUR aRm. Is not the same as "They released this on purpose to sell vaccines". The former flies in the face of all reason, whereas the latter lays out a reasonable motive and opportunity; but it still asserts without an indictment and is thus still a conspiracy theory--it's just that it's not as crazy as the first one.
So. Apples and oranges. At this point, a suspicion that the whistleblower was assassinated doesn't make you a conspiracy theorist. Real investigators who don't live in their Mom's basement are looking in to it, and they're not crazy. They're not conspiracy theorists. If their reports don't satisfy us, that widens the net of potential participants in a conspiracy, and as real conspiracies get large they tend to unravel. It takes time, but it does happen; so I'm not in denial over the fact that some "conspiracy theories" do in fact become "conspiracy fact"; but in the meantime you're better off (and less likely to be regarded as a nut) if you express suspicion rather than certitude that something evil has occurred.